Supplier Page from Thermo Fisher Scientific for 4-(2-Pyridylazo)resorcinol monosodium salt monohydrate
3-Fluorobenzyl bromide, 95% from Thermo Fisher Scientific
Ethyl acetoacetate, 99%, pure from Thermo Fisher Scientific
Ethyl oxalyl chloride, 98% from Thermo Fisher Scientific
Ethyl pyruvate, 98% from Thermo Fisher Scientific